... , turning, vertical cutting, Oblique angle cutting, drilling, gun drilling, tapping, assembly, welding, riveting, punch, stamping, bending, stretching, forging, die casting, mold ... chemical composition (GB/T3190) Aluminum GradeSiFeCuMnMgCrZnTiimpurityAl60630.2-0.6<0.35 <0.1 <0.1 0.45-0.9 <0.1 ... .4 0.15 0.8-1.2 0.04-0.35 0.25 0.15 ≤0.15 Rest You are warm ...